import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:flutter_module/flutter_channel.dart';
import 'package:flutter_module/native_channel.dart';
import 'package:flutter_module/page_second.dart';
import 'package:flutter_module/test_list.dart';

void main() {
  debugPrint("main accept params:${window.defaultRouteName}");
  runApp(const MyApp());
}

void main2() {
  debugPrint("main2 accept params:${window.defaultRouteName}");
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: "create new Flutter Application"),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  @override
  void initState() {
    super.initState();
    flutterChannel.setMethodCallHandler(
        (call) async {
          switch(call.method) {
            case "CALL_FLUTTER":
              List<Object?> args = call.arguments;
              var msg = args[0] as String;
              return "MyHomePage:$msg";
          }
        },
    );
  }

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
      if (_counter % 2 == 0) {
        // 跳转native页面
        jumpNativeChannel.invokeMethod(startActivityMethodName, secondActivityClassName);
      } else {
        // 跳转一个新的Flutter页面
        Navigator.push(context, MaterialPageRoute(builder: (context) => const SecondPage(title: "Second Page")));
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          //
          // Invoke "debug painting" (press "p" in the console, choose the
          // "Toggle Debug Paint" action from the Flutter Inspector in Android
          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
          // to see the wireframe for each widget.
          //
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
            Image.asset("assets/images/diff_ico.png"),
            Padding(
              padding: const EdgeInsets.all(20),
              child: InkWell(
                child: const Text("TodoListPage"),
                onTap: () {
                  Navigator.push(context,
                      MaterialPageRoute(
                        builder: (context) => TodoScreen(todos: todos),
                        settings: const RouteSettings(name: "Main Page open TodoScreen")
                      ),
                  );
                },
              ),
            )
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}


